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تسجيل مستخدم جديدHelicity-type integral invariants for Hamiltonian systems
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تأليف
Mikhail V. Deryabin
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In this note, we consider generalizations of the asymptotic Hopf invariant, or helicity, for Hamiltonian systems with one-and-a-half degrees of freedom and symplectic diffeomorphisms of a two-disk to itself.
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